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A306970
Numbers of the form 8*k+3 not represented by 2*x^2+4*y^2+4*y*z+9*z^2.
0
3, 43, 163, 907
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OFFSET
1,1
COMMENTS
There may be no further terms.
LINKS
Table of n, a(n) for n=1..4.
Irving Kaplansky,
The first nontrivial genus of positive definite ternary forms
, Mathematics of Computation, Vol. 64 (1995): 341-345.
CROSSREFS
Cf.
A017101
(numbers of the form 8*k+3).
Sequence in context:
A042661
A281503
A030990
*
A054698
A229695
A060559
Adjacent sequences:
A306967
A306968
A306969
*
A306971
A306972
A306973
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Mar 26 2019
STATUS
approved
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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)